Regulatory photoreceptor which exists in two forms that are reversibly interconvertible by light: the Pr form that absorbs maximally in the red region of the spectrum and the Pfr form that absorbs maximally in the far-red region. Photoconversion of Pr to Pfr induces an array of morphogenic responses, whereas reconversion of Pfr to Pr cancels the induction of those responses. Pfr controls the expression of a number of nuclear genes including those encoding the small subunit of ribulose-bisphosphate carboxylase, chlorophyll A/B binding protein, protochlorophyllide reductase, rRNA, etc. It also controls the expression of its own gene(s) in a negative feedback fashion.

Belongs to the phytochrome family.

1124 amino acids

MSSSRPSQSSTTSARSKHSARIIAQTTIDAKLHADFEESGDSFDYSSSVRVTSVAGDERKPKSDRVTTAYLNQIQKGKFIQPFGCLLALDEKTFKVIAFSENAPEMLTMVSHAVPSVGELPALGIGTDIRTIFTGPSAAALQKALGFGEVSLLNPVLVHCKTSGKPYYAIVHRVTGSLIIDFEPVKPYEVPMTAAGALQSYKLAAKAITRLQALPSGSMERLCDTMVQEVFELTGYDRVMTYKFHDDDHGEVVAEITKPGLDPYLGLHYPATDIPQAARFLFMKNKVRMICDCRAKHVKVVQDEKLPFDLTLCGSTLRAPHYCHLQYMENMSSIASLVMAVVVNDGDEEGESSDSTQSQKRKRLWGLVVCHNTTPRFVPFPLRYACEFLAQVFAIHVNKELELESQILEKNILRTQTLLCDMLMRVAPLGIVSQSPNIMDLVKCDGAALLYKNKIHRLGMTPSDFQLHDIVSWLSEYHTDSTGLSTDSLYDAGFPGALALGDVVCGMAAVRISDKGWLFWYRSHTAAEVRWGGAKHEPGEKDDGRKMHPRSSFKAFLEVVKTRSVPWKDYEMDAIHSLQLILRNASKDADAMDSNTNIIHTKLNDLKIDGLQELEAVTAEMVRLIETASVPIFAVDVDGQLNGWNTKIAELTGLPVDEAIGNHLLTLVEDSSVDTVSKMLELALQGKEERNVEFEIKTHGPSGDSSPISLIVNACASRDVGDSVVGVCFIAQDITGQKNIMDKFTRIEGDYRAIIQNPHPLIPPIFGTDQFGWCSEWNSAMTKLTGWRRDDVIDKMLLGEVFGTQAACCRLKNQEAFVNFGVVLNNAMTGQECAKISFGFFARNGKYVECLLCVSKRLDREGAVTGLFCFLQLASHELQQALHIQRLSEQTALKRLKVLAYIRRQIRNPLSGIIFSRKMLEGTNLGEEQKNILRTSSQCQRQLNKILDDTDLDSIIDGYLDLEMLEFKLHEVLVASISQIMMKSNGKNIMIVNDMVEDLLNETLYGDSPRLQQVLANFLLVCVNSTPSGGQLSISGTLTKDRIGESVQLALLEVRISHTGGGVPEELLSQMFGTEAEASEEGISLLISRKLVKLMNGEVQYLREAGRSTFIISVELAVATKSSC

124.3 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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